All Gemstones

1.20 ct Brazilian blue-green tourmaline, oval modified brilliant cut, face-up view, Otzera OTZ-2026-01650 34 Otzera 50 rating: 34 of 50 Collectible 1.20 ct Brazilian Blue-Green TourmalineOval Modified Brilliant Cut$760.00 3.19 ct raspberry rhodolite garnet in a pear-shaped buff-top mixed cut, face-up view, Otzera OTZ-2026-01649 32 Otzera 50 rating: 32 of 50 Collectible 3.19 ct Raspberry Rhodolite GarnetPear Shape Buff Top Mixed Cut$1,088.00 1.38 ct natural yellow sapphire from Sri Lanka in an oval mixed cut, face-up view, Otzera OTZ-2026-01648 36 Otzera 50 rating: 36 of 50 Distinguished 1.38 ct Ceylon Yellow SapphireOval Mixed Cut$825.00 1.00 ct unheated natural ruby, oval mixed cut, alternate face-up view, Otzera OTZ-2026-01655 36 Otzera 50 rating: 36 of 50 Distinguished 1.00 ct Unheated Natural RubyOval Mixed Cut$1,600.00 4.06 ct heated natural blue sapphire from Sri Lanka, cushion mixed cut, face-up view 39 Otzera 50 rating: 39 of 50 Distinguished 4.06 ct Ceylon Blue Sapphire — GIA Origin ReportCushion Mixed Cut$8,900.00 1.40 ct heated natural ruby from Vietnam, cushion mixed cut, face-up view 37 Otzera 50 rating: 37 of 50 Distinguished 1.40 ct Vietnamese Ruby — GIA Origin ReportCushion Mixed Cut$2,400.00 2.82 ct heated natural pinkish purple sapphire, cushion cut, face-up view 33 Otzera 50 rating: 33 of 50 Collectible 2.82 ct Natural Pinkish Purple Sapphire — GIA ReportCushion Modified Brilliant Cut$3,650.00 1.70 ct natural purple spinel in a cushion modified brilliant cut, shown from multiple angles, Otzera OTZ-2026-01651 29 Otzera 50 rating: 29 of 50 Collectible 1.70 ct Natural Purple SpinelCushion Modified Brilliant Cut$699.00 0.79 ct natural red spinel from Myanmar in an oval mixed cut, shown from multiple angles, Otzera OTZ-2026-01645 34 Otzera 50 rating: 34 of 50 Collectible 0.79 ct Myanmar Red SpinelOval Mixed Cut$1,190.00 1.28 ct natural purple spinel from Vietnam in a round brilliant cut, shown from multiple angles, Otzera OTZ-2026-01647 34 Otzera 50 rating: 34 of 50 Collectible 1.28 ct Vietnamese Purple SpinelRound Brilliant Cut$930.00 2.98 ct natural blue-green tourmaline from Namibia in an oval buff top modified brilliant cut, shown from multiple angles, Otzera OTZ-2026-01646 33 Otzera 50 rating: 33 of 50 Collectible 2.98 ct Namibian Blue-Green TourmalineOval Buff Top Modified Brilliant Cut$1,290.00 2.13 ct natural red spinel, close face-up view, Otzera OTZ-2026-01643 27 Otzera 50 rating: 27 of 50 Discovery 2.13 ct Natural Red SpinelOval Mixed Cut$1,225.00 2.94 ct natural Colombian emerald, square face-up product view, Otzera OTZ-2026-01642 38 Otzera 50 rating: 38 of 50 Distinguished 2.94 ct Colombian Emerald — GIA Origin ReportCushion — Brilliant Cut crown / Modified Brilliant Cut pavilion$14,725.00 9.05 ct natural Nigerian aquamarine, face-up product view, Otzera OTZ-2026-01638 37 Otzera 50 rating: 37 of 50 Distinguished 9.05 ct Natural Nigerian AquamarineCushion Modified Brilliant$3,150.00 1.57 ct natural purple sapphire oval modified brilliant face-up on brushed metal 37 Otzera 50 rating: 37 of 50 Distinguished 1.57 ct Unheated Sri Lankan Purple Sapphire$1,560.00 2.32 ct natural green sapphire round brilliant face-up on brushed metal 33 Otzera 50 rating: 33 of 50 Collectible 2.32 ct Green Round Brilliant Sapphire$890.00 2.22 ct natural Andradite garnet showing olive green and golden flashes 32 Otzera 50 rating: 32 of 50 Collectible 2.22 ct Olive Andradite Garnet$928.00 23.58 ct natural pink tourmaline standing face-up with lively pink flashes, Otzera OTZ-2026-01635 41 Otzera 50 rating: 41 of 50 Signature 23.58 ct Natural Pink TourmalineCushion Modified Brilliant$8,050.00 1.70 ct Merelani mint grossular garnet held face-up in tweezers, round modified brilliant cut, Otzera OTZ-2026-01636 40 Otzera 50 rating: 40 of 50 Distinguished 1.70 ct Merelani Mint Grossular GarnetRound Modified Brilliant$1,885.00 11.43 ctw Matched Natural Yellow Zircon Pair 41 Otzera 50 rating: 41 of 50 Signature 11.43 ctw Matched Natural Yellow Zircon PairRound Modified Brilliant$2,475.00 17.41 ctw carved watermelon tourmaline suite displayed as three matching pieces in presentation box, Otzera OTZ-2026-00326 17.41 ctw Carved Watermelon Tourmaline Suite$995.00 9.51 ctw matched pair of deep red custom-cut almandite garnets with four-point checkerboard-style crowns, Otzera OTZ-2026-01634 31 Otzera 50 rating: 31 of 50 Collectible 9.51 ctw Custom-Cut Almandite Garnet PairCustom Cut$499.00 9.42 ctw matched pair of custom-cut purple amethysts with checkerboard-style facets, Otzera OTZ-2026-01633 34 Otzera 50 rating: 34 of 50 Collectible 9.42 ctw Custom-Cut Amethyst PairCustom Cut$499.00 2.14 ctw matched pair of vivid green oval tsavorite garnets, Otzera OTZ-2026-01632 38 Otzera 50 rating: 38 of 50 Distinguished 2.14 ctw Matched Tsavorite Garnet PairOval Modified Brilliant Cut$2,250.00 7.81 ctw matched pair of custom-cut citrines, Otzera OTZ-2026-01631 38 Otzera 50 rating: 38 of 50 Distinguished 7.81 ctw Custom-Cut Citrine PairCustom Cut$499.00 3.20 ctw matched pair of cushion-cut Oregon sunstones in orange, gold and brown tones, Otzera OTZ-2026-01630 40 Otzera 50 rating: 40 of 50 Distinguished 3.20 ctw Matched Oregon Sunstone PairCushion Shape Modified Brilliant Cut$975.00 1.63 ct vivid red oval spinel shown from multiple angles, Otzera OTZ-2026-01629 40 Otzera 50 rating: 40 of 50 Distinguished 1.63 ct Vivid Red SpinelOval Mixed Cut$2,450.00 3.22 ct aquamarine, close angled emerald-cut view 36 Otzera 50 rating: 36 of 50 Distinguished 3.22 ct Blue Emerald-Cut AquamarineEmerald Cut$965.00 1.85 ct unheated Sri Lankan purple sapphire in a triangular mixed cut, Otzera OTZ-2026-01627 37 Otzera 50 rating: 37 of 50 Distinguished 1.85 ct Unheated Sri Lankan Purple SapphireTriangular Mixed Cut$1,250.00 2.14 ct vivid orange oval spessartite garnet shown from multiple angles, Otzera OTZ-2026-01626 35 Otzera 50 rating: 35 of 50 Distinguished 2.14 ct Fanta-Orange Spessartite GarnetOval Mixed Cut$825.00 2.14 ct steel-blue cushion-cut sapphire shown from multiple angles, Otzera OTZ-2026-01625 28 Otzera 50 rating: 28 of 50 Collectible 2.14 ct Blue SapphireCushion Mixed Cut$749.00 A cushion-cut purple sapphire, displayed on a brushed silver metal surface. 4.52 Carat Unheated Ceylon Purple Sapphire$2,745.00 A single oval-cut yellow sapphire with a faceted surface, resting on a brushed silver metal background. 4.98 Carat Antique Ceylon Yellow Sapphire$1,175.00 An oval-cut yellow sapphire with faceted reflections, resting on a brushed silver metal surface. 4.20 Carat Vivid Yellow Sapphire$1,895.00 3.83 ct natural yellow chrysoberyl, face-up oval view on a brushed silver background. 3.83 Carat Antique Yellow Chrysoberyl$1,775.00 An oval-cut dark blue sapphire, displayed on a textured silver metallic surface. 2.30 ct Blue Sapphire$350.00 2.41 ct unheated Australian blue sapphire, cushion sugarloaf cabochon front view on a brushed silver background. 2.41 ct Unheated Australian Blue Sapphire - GIA Certified$2,150.00 1.15 ct natural Sri Lankan ruby, face-up view showing vivid pinkish red color 1.15 ct Natural Pinkish Red Ruby from Sri Lanka — Dual Certified$2,250.00 0.51 ct natural Muzo Colombian emerald, face-up view of rectangular step cut 0.51 ct Natural Muzo Colombian Emerald$815.00 An oval-cut yellow gemstone with faceted reflections, resting on a reflective silver surface. 10.32 ct Natural Golden Beryl — Heliodor$625.00 1.27 ct unheated Cambodian royal blue sapphire, alternate face-up view showing vivid blue color 1.27 ct Unheated Cambodian Royal Blue Sapphire$2,450.00 A single emerald-cut green emerald with visible internal inclusions, resting on a brushed silver metal surface. 2.48 ct Colombian Emerald$1,450.00 1.71 ct GIA-certified Paraiba-type tourmaline, face-up oval view showing vivid green-blue color. 1.71 ct Paraiba-Type Tourmaline, GIA Certified$4,750.00